Influenza virus activity continues in all regions of the United
States. An excess in the ratio of deaths from pneumonia and
influenza
(P&I) to total deaths was recorded from 121 cities for the fifth
consecutive week. The ratio of P&I deaths for the week ending
February 12, 1983, was 4.8, and the expected ratio was 4.1. Four
states (Nebraska, New Hampshire, Oklahoma, and Texas) reported
widespread influenza activity for that same week.
Delaware has now reported its first influenza isolation of the
season, making a total of 37 states with reported influenza
isolates
(1,2). Most of the virus isolates have been identified as type
A(H3N2) related to the Bangkok/79 component of the current vaccine.
However, influenza type A(H1N1) virus has been isolated from
sporadic
cases in Arizona, California, Illinois, Minnesota, Texas, and
Wisconsin. Influenza type B virus has been isolated from sporadic
cases in California, Nebraska, Ohio, and Texas.
Reported by Respective state epidemiologists and laboratory
directors;
Consolidated Surveillance Activity, Epidemiology Program Office,
Influenza Br, WHO Collaborating Center for Influenza, Div of Viral
Diseases, Center for Infectious Diseases, CDC.
CDC. Update: influenza activity--United States. MMWR
1983;32:75-6.
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